|  | Sequence 2 |  |
---|
 |  | A | G | C | T | total |
Sequence 1
| A | 1363 | 45 | 18 | 54 | 1480 |
 | G | 37 | 823 | 9 | 17 | 886 |
 | C | 21 | 11 | 898 | 32 | 962 |
 | T | 17 | 11 | 27 | 1120 | 1175 |
 | total | 1438 | 890 | 952 | 1223 | 4503 |
- Pairs of nucleotide for 4503 sites of sequence that has diverged according to a general-time-reversible (GTR) model, from real Drosophila intronic data. The columns are the bases in the first sequence. Here, we chose a long intron from D. simulans and D. melanogaster, aligned them using AVID, then counted the aligned sites regardless of gaps.